Machine for assembling

 

(57) Abstract:

Usage: Assembly type electrical connections used in instrumentation, radio and electrical industry. The invention is based are the mechanism of step motion with a tray loading mechanism pads in the tray, the sensor control their position in the tray, the mechanism of crimp contacts, sensor control the correctness of the set of contacts in the block, the mechanism of hands, the sorting mechanism and the control system. To limit longitudinal movement of the carriage are movable removable stops. The distance between their working surfaces equal to the minimum step of the transportation. Pads are in engagement with the gripper carriage having one or more protrusions. The distance between the protrusions is equal to the minimum step of the transportation. The loading mechanism is a gate with an open top groove for pads that move perpendicular to the tray. Above the gate is installed cartridge pads. The sensor position control pads in the tray is equipped with a spring-loaded probe that controls the width of the interval between adjacent pads. In sorting mechanism of the discharge trays for parts the difference is you to build products type electrical connectors, used in instrument making, radio and electrical industry.

A known machine for the Assembly that contains mounted on the basis of the mechanism of step motion of the base parts to be assembled with the tray and carriage mounted for movement along the tray and come with clamps, stops for limiting the movement of the carriage, the loading mechanism underlying parts to be assembled in the tray in the form of a cartridge and pusher drive that is installed with the possibility of reciprocating movement in a direction perpendicular to the tray, the mechanism of crimp contacts in the base part, the control sensor correct set of contacts in the base part, the cutting mechanism, mechanism of sorting the collected nodes with unloading trays and control system.

The known machine has the following disadvantages.

The mechanism of step motion machine practiced all steps equal to the spacing of the cells in the block, regardless of the need to equip the cell contact. This disadvantage is due to the fact that the movable stops the release so kinematically connected with a comb that when moving in the direction of transportation of the follower is s with a carriage return on the length of the transported blocks for the next capture of the latter. This is because the grips cover the transported strip on its outer ends.

Technological possibilities of the machine Assembly is limited. This is due to the design of mechanisms for loading, sorting and low accuracy positioning pads on the working positions of the machine.

In the loading mechanism, the pusher, the feeding of the next block in the tray mechanism of step motion, shifts the whole number of blocks in the series horizontal cartridge and the first block in the row falls into the tray, and then is caught by hooks and transported them along the tray. At the moment the next pad in the cassette performs the function of one of the walls of the tray. For the smooth transportation of pads on the tray at least one of the surfaces of adjacent blocks, facing each other, should be smooth. This drawback reduces the technological capabilities of the machine for the Assembly of pads with a complicated surface shape, for example, round connectors on the side surfaces of the pads which are protrusions.

This disadvantage is inherent in the finisher, downstream trays which it is possible to distribute only products of simple forms, not erpendicular tray close to each other and, if the product does not have sufficient bearing surface or are on the sides, facing each other, protrusions or protruding contacts, they can adhere lose orientation and not to fall into the discharge tray.

Low precision positioning pads on the working positions of the machine reduces the technological capabilities of the Assembly of the connectors with high requirements to accuracy of location to be installed in the Shoe parts, such as miniature connectors. This is because the base pads in the grips is one of the end faces, which is the base, and the location of the cells under the contacts has an error of location, increasing as the distance from the base end due to the accumulation of the error in step caused by different shrinkage of the material during the casting block.

The disadvantage of this machine is the lack of availability control in the tray pads, which may not be installed in the tray due to the failure of the loading mechanism, resulting contacts are served in the pressing mechanism in the tray without pads. Undue process losses caused by the fact that the error in the set of contacts in a separate container for marriage sent not one non the invention is to improve the performance of the Assembly, the expansion of technological capabilities and the reduction of technological losses of the machine.

This is achieved by known machine for the Assembly that contains mounted on the basis of the mechanism of step motion of the base parts to be assembled with the tray and carriage mounted for movement along the tray and come with clamps, stops for limiting the movement of the carriage, the loading mechanism underlying parts to be assembled in the tray in the form of a cartridge and pusher drive that is installed with the possibility of reciprocating movement in a direction perpendicular to the tray, the mechanism of crimp contacts in the base of the collected items, the control sensor correct set of contacts in the base part, the cutting mechanism, mechanism of sorting the collected nodes with unloading trays and control system, equipped with a sensor monitoring the position of the base parts to be assembled in the tray, made in the form of a power cylinder disposed perpendicular to the tray associated with the control system of limit switches and mounted on the rod of the power cylinder rod, the width of the working part which is equal to the distance between the conveyed parts, and valve, the latter of which ustroitelstva carriage made in the form of replaceable elements, the distance between the working surfaces of which is equal to the minimum step of transporting installed with the possibility of reciprocation, and kinematically associated actuator, the grips are made with working parts in the form of one or more tabs with a pitch that is a multiple of the minimum step of transporting the plunger is made in the form located under the cassette of the gate with a groove to collect basic details on the surface facing the cassette carriage installed with the possibility of angular displacement about an axis that is parallel to the tray and the discharge tray of the sorting mechanism mounted for movement relative to the tray transfer mechanism and provided with a drive.

One of the stops in the form of replaceable movable elements, the distance between the working surfaces of which is equal to the minimum step of transporting, in contrast to the prototype, not to work out all the steps equal to the spacing of the cells in the part (block), and move the block on a necessary step according to the circuit Assembly.

The working parts of the grippers in the form of one or more tabs with a spacing multiple minimalisan with a carriage return on the length of the transported pads for another seizure last, as well as to improve the accuracy of positioning pads on the working positions of the machine by reducing the distance from the surface of the base to the working position.

The implementation mechanisms of sorting and loading according to the invention allows loading and sorting pads with a complicated surface shape, such as forks of electrical connectors, due to the possibility of separate movement of each block.

Installation of the sensor position control basic parts to be assembled in the tray allows you to reduce process losses caused, for example, a faulty operation of the loading mechanism.

The sorting mechanism of the proposed design also allows you to reduce process losses due to the fact that in the box with the marriage go only individual incorrectly assembled products, not a set of products collected within blocks of the original length.

In Fig. 1 shows a kinematic diagram of the device of Fig. 2 - section a-a of Fig. 1; Fig. 3 - the extreme right position of the carriage; Fig. 4 - the leftmost position of the carriage at the maximum step of the transportation; Fig. 5 - the leftmost position of the carriage with the minimum step transportation; Fig. 6 - what about the same (item offset from the correct position to the right); Fig. 9 - same (item offset from the correct position to the left).

The machine comprises a base 1 on which is placed the mechanism of step motion with tray 2 to collect basic details (pads) 3 mechanism 4 download pads in the tray, the sensor 5 position control pads in the tray, the pressing mechanism 6 contacts 7, the sensor 8 check whether the set of contacts 7 in the block, the cutting mechanism 9, the sorting mechanism 10 and system 11 of the control.

The mechanism of step motion of the pad 3 comprises a carriage 12 that is installed with the possibility of longitudinal movement and rotation around its axis in the guide rails 13 and 14. On the carriage 12 ñ 15, connected with the rod of the pneumatic cylinder 16, and the hooks 17, one of which is connected to a rod of the pneumatic cylinder 18 (Fig. 2). The working part of the grippers 17 are made in the form of one or more tabs with a pitch that is a multiple of the minimum step of the transport blocks, which is equal to the distance between adjacent cell blocks. The hooks 17 are set relative to each other at a distance equal to the spacing of the pads in the tray 2, and the right ledge grabs 17 in their extreme PR is INEM right position leans over the bar 15 to the stop 19, and in the left - end face 20 of the carriage 12 on the wall of the housing 21 or on the working surface of one of the lugs 22, 23 or 24, mounted for movement perpendicular to the axis of the carriage by the signal system 11 according to the circuit Assembly. The distance between the wall of the housing 21, the working surfaces of adjacent lugs 22, 23, 24 and the end face 20 of the carriage 12 in its rightmost position equal to the minimum step and transportation (Fig. 3).

Mechanism 4 download pads in the tray 2 consists of a body 25, the gate 26 with an open top groove 27, designed to collect basic details. The gate 26 is mounted for movement in the housing 25 is perpendicular to the tray and connected to a rod of the pneumatic cylinder 28. Above the groove 27 in the leftmost position of the gate (Fig. 6) set the cassette 29 with the pads, tucked cargo 30, having the ability to act in the lowest position to the destination switch 31.

The sensor 5 controlling the position of the parts in the tray consists of a housing 32 in which is mounted for movement perpendicular to the tray slide 33, which is connected with the rod of the pneumatic cylinder 34, the probe 35, bogatogo spring 36, the working of which is made stepwise, and a narrower part is located on co with the ability to interact with end switches 38 and 39.

The sensor 8 check whether the set of contacts 7 in block consists of a housing 40 in which is mounted for movement perpendicular to the tray 2, the slider 41, which is connected with the rod of the pneumatic cylinder 42, the probe 43, bogatogo spring 44, valve 45 is installed on the probe 43 with the ability to interact with end switch 46.

The cutting mechanism 9 consists of a housing 47, knife 48 mounted for movement perpendicular to the tray 2 and connected with the rod of the pneumatic cylinder 49.

The sorting mechanism 10 consists of a housing 50, a multiple discharge tray 51 (in this case three), mounted on the column 52 mounted for movement in the housing 50 and connected to the rods of the air cylinders 53 and 54. In column 52 on both sides of the tray 51 are spring 55 and 56.

Machine Assembly operates as follows.

In the initial position, the carriage 12 is in its rightmost position, based strap 15 to the stop 19 and the hooks 17 are its projections in engagement with the tabs of the pads 3. When the supply pressure in the left cavity of the pneumatic cylinder 18 (Fig. 2) the grippers 17 are rotated around the axis of the carriage 12 in a clockwise direction and out of the hook movement of the carriage 12 with the hooks 17 in the leftmost position to the engagement end 20 of the carriage 12 with the wall of the housing 21 or one of the stops 22, 23, 24.

When applying pads on the maximum step of transporting the stops 22, 23, 24 on command from the system control go up and the end of the carriage 12 rests on the wall of the housing 21 (Fig. 4), when applying the pads to the minimum step of transporting the end face 20 of the carriage 12 is based on the working surface (Fig. 5) stop 24, when applying the pads to the step equal to two minimum steps of transportation, the stop 24 is lifted by the command system 11 and the end face 20 of the carriage 12 is based on the working surface of the stop 23 and so on, respectively, the circuit Assembly.

When applying pressure in the right cavity of the pneumatic cylinder 18 (Fig. 2) is the rotation of the carriage 12 with the hooks 17 on its axis counterclockwise. When this latch hooks are engaged with the tabs of the pads 3. When the supply pressure in the left cavity of the pneumatic cylinder 16 moves the carriage 12 with the hooks 17, which provides simultaneous longitudinal step-by-step move all pads 3 in the tray.

When the output pads of the groove 27 of the gate 26 at the command of the control system, pressure builds in the right cavity of the pneumatic cylinder mechanism 28 4 download pads (Fig. 6). When the gate 26 moves to the left and stops the open groove in the cartridge 29. Under action is carried out right, cutting off one Shoe, and stops in front of the tray 2. The pad is engaged with the hooks 17 and served right on the tray for the previous block with a specified interval between them. As production pads in the cassette 29 load 30 is lowered and in the lower position affects the limit switch 31, which signals to the control system 11 about changing the cassette 29.

The sensor 5 position control pad controls the width of the interval between adjacent pads spring-loaded probe 35 during movement of the slide 33 in the direction of the pads due to the supply pressure in the lower cavity of the pneumatic cylinder 34 at the command of the system 11.

When the correct position of the pads in the tray (Fig. 7) the probe 35 to its narrow part takes place in the interval between the pads, and step relies on the left block, and the valve 37 is located between the end switches 38 and 39. When the displacement of the left block to the left from the correct position (Fig. 8) the probe 35 passes freely between the pads, valve 37 is stopped against the end of the switch 38, which signals to the system 11 about disabling the machine.

At offset pads left right or right block to the left from the correct position (Fig. 9) the probe 35 leans end of the connection machine.

The pressing mechanism 6 contacts 7 contacts in the cell blocks according to the scheme builds on each step of the carriage.

The correctness of the set of contacts 7 in block 3 according to the circuit Assembly is carried out at each step of the carriage is spring-loaded probe 43 during movement of the slide 41 in the direction of the Shoe due to the supply pressure in the lower cavity of the pneumatic cylinder 42. In the absence of contact in the cell block valve 45 communicates with the destination switch 46, which signals to the system 11 about marriage. In sorting mechanism of the marriage is given in the appropriate tray.

The knife mechanism 48 9 cutting cut the part of the pad is necessary liposomial according to a given program when applying pressure in the upper chamber of the pneumatic cylinder 49 at the command of the system 11.

Cut the block of one liposomial corresponds to a certain discharge tray in a three-section tray 51, which is installed under the pad at the command of the control system when the supply pressure in the pneumatic cylinder 53 or 54. In the initial position in the absence of pressure in the pneumatic cylinder opposite the tray 2 is the average discharge tray three-section tray 51. In initial position the tray 51 ustanavlivaetsya mounted on the basis of the mechanism of step motion of the base parts to be assembled with the tray and the carriage, installed with the possibility of moving along the tray and come with clamps, stops for limiting the movement of the carriage, the loading mechanism underlying parts to be assembled in the tray in the form of a cartridge and pusher drive that is installed with the possibility of reciprocating movement in a direction perpendicular to the tray, the mechanism of crimp contacts in the base of the collected items, the control sensor correct set of contacts in the base part, the cutting mechanism, mechanism of sorting the collected nodes with unloading trays and control system, characterized in that it has a sensor controlling the position of the base parts to be assembled in the tray, made in the form of a power cylinder, perpendicular to the tray associated with the control system, limit switches, mounted on the rod of the power cylinder supa, working width of which is equal to the distance between the conveyed parts, and valve, the latter set with the ability to interact with end switches, one of the stops for limiting the longitudinal movement of the carriage is made in the form of replaceable elements, the distance between the working surfaces of which is equal to the minimum step of transportation, us, achvity made with working parts in the form of one or more tabs with a pitch that is a multiple of the minimum step of transportation, the plunger is made in the form located under the cassette of the gate with a groove to collect basic details on the surface facing the cassette carriage installed with the possibility of angular displacement about an axis that is parallel to the tray and the discharge tray of the sorting mechanism mounted for movement relative to the tray transfer mechanism and provided with a kinematically associated actuator.

 

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